34results about How to "Play an anti-seepage role" patented technology

The invention discloses a modified mixed dam applicable to tailings ponds. The dam comprises a dam body, an upstream face impermeable layer, an impermeable tooth groove, a drainage piled rock prism body, an upstream face drainage layer, an upstream face inverted filter layer, an inverted filter tooth groove, a dam outer slope impermeable layer, a dam lower inverted filter layer, a dam lower drainage layer, a drainage pipe, a seepage collection pipe, a dam body and mountain contact surface impermeable layer, and a dam body and mountain contact surface drainage layer, wherein the upstream face impermeable layer is positioned among the dam body, the drainage piled rock prism body and the upstream face drainage layer; the upstream face drainage layer and the drainage piled rock prism body are positioned between the upstream face impermeable layer and the upstream face inverted filter layer; the drainage piled rock prism body is positioned below the upstream face drainage layer; the dam lower inverted filter layer is positioned between the dam body and the dam lower drainage layer; the drainage pipe is positioned in the dam lower drainage layer; the inlet of the drainage pipe is connected with the seepage collection pipe; a gate valve is arranged at the outlet of the drainage pipe; the seepage collection pipe is positioned in the drainage piled rock prism body. The dam has the advantages that local material can be adopted for damming, the damming cost is low, the running is reliable, the maintenance is convenient, and the function is comprehensive.

The invention discloses a preparation process of a self-draining concrete block, which belongs to the technical field of the preparation process of concrete blocks. A hole forming device is arranged in the cavity of a pouring mold, and the concrete pouring material is introduced into the mold through the pouring port. After entering the cavity, the concrete pouring material covers the entire cavity and covers the end surface of the hole forming device. After demoulding, the obtained block body is separated from the cavity and the hole forming device, and the formed and hole forming The hole structure matching the hole forming device is beneficial to the drainage of the block body during use, and can quickly dredge a large amount of rainwater to a certain extent. The combination of tampering rods, after the concrete pouring material is poured, uses continuous and intermittent pneumatic control to realize the reciprocating expansion and contraction of multiple tampering rods, so as to vibrate the concrete pouring material and effectively improve the quality of concrete blocks.

The invention belongs to the technical field of anti-seepage construction, and in particular relates to a flexible connecting and sealing bitumastic anti-seepage structure of a tunnel deformation joint and a constructing method, which can ensure the normal use of a subway tunnel under the action of fracture formation of the ground. In the technical scheme, the method comprises the following steps: laying a composite layer of modified asphalt anti-seepage plate, pouring reinforced concrete for lining, setting deformation joints, mounting flexible baffles in the deformation joints, utilizing glass fiber cloth to seal gaps of the baffles, and pouring bitumastics to fill gaps of the deformation joints. The anti-seepage structure constructed in the method has the anti-seepage performance of the composite layer of modified asphalt anti-seepage plate, the extension performance and the anti-seepage performance of the bitumastics, and the blocking function of the flexible baffles. Therefore, the anti-seepage structure can ensure the effective sealing of the joint and prevent the significant water leakage accident while fully adapting to the large-displacement slipping deformation in the positions with the deformation joints of the composite lining structure, and has high economic and social benefits.